[forthman]

I broke my pump gear this Sat. night at the track.
I was shifting the motor higher than the tranny had ever seen. 7,000 into second and 6,700 into 3rd
Hit 3rd gear on a 6,700 rpm shift and it went.
What i like to know is why?
Are there and ways to make the gear stronger?
Ordered a new gear from Bulkpart.com but wondered if i will just break it ?

 

[gregaust]

Check how deep the convertor is engaged.Have seen and heard if it's not deep enough into the gear can cause this.

 

[forthman]

Ok will do, thanks

 

[64 TBOLT]

you meen like this. First time at 5500

<font size=-1>[ This Message was edited by: 64TBOLT2 on 4/24/06 6:51pm ]</font>

 

[forthman]

Yup looks just like that

Really a bummer as was just getting car to launch, was a blast taking off with the front wheels 6" off the ground.

 

[forthman]

64tbolt2
Did you try and save your converter?
Mine has metal ground into it from the broken gear it looks like, and the pump gear does not want to seat down smooth. I was gonna try and file/sand paper it back smooth. Will this be ok to do?

 

[mikeandnatasha]

I have a ******* transbrake valve body too. I also have an edge converter and I blew my pump up just like that. Edge told me the reason was Ilet of the brake without running the built up charge through the transmission. Sounds fishy to me. I am leaning towards the ******* valve body pressure relief not letting enough out. I'm goingto hook up a pressure gauge this time around and see whats going on at high rpm I suspect a LOT of line pressure is wiping these pumps out.

Anyway I had them weld a new hub on the converter and cut it open, clean it all out and install new bearings. $140 total but its worth the peace of mind.

 

[64 TBOLT]

the converter can be cleaned up.Im not gonna clean it up and have the same thing happen again

 

[forthman]

I filed the snout back down to a nice smooth finish. Gears slips on just liek new. I am concered about what was mentioned as too much line pressure. I can try and setup a gage on it. What would be too much?

 

[gregaust]

Depending of the V.B you would expect to see around 200 psi maybe up to 240psi.

 

[forthman]

Thanks, got a gage i can use that will read to 300 lbs. Will see what i am getting this weekend.
Is it as simple as changing the spring to raise and lower the line pressure?

 

[gregaust]

Yes the Main pressure regulator spring . They can be shimmed to raise pressure as some guys on here do .If pressure is way high valve could be stuck or tight